Neutral heteroleptic cyclometallated Platinum(II) complexes featuring 2-phenylbenzimidazole ligand as bright emitters in solid state and in solution

Lanoë, Pierre‐Henri; Moreno-Betancourt, Angélica; Wilson, L. N.; Philouze, Christian; Monnereau, Cyrille; Jamet, Hélène; Jouvenot, Damien

doi:10.1016/j.dyepig.2018.11.029

Cited by 13 publications

(12 citation statements)

References 102 publications

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“…Moreover, microcrystals demonstrated different luminescence properties than macro/large crystals ( Figure 6 ). Microcrystalline emission (up to Φ = 0.51) was also reported in 2-phenylbenzimidazole-based Pt(II) complexes bearing acac ancillaries [ 26 ].…”

Section: Structure–property Relationshipsmentioning

confidence: 94%

“…Most, if not all, of their properties can be tuned through manipulation of the main and ancillary ligands [ 23 , 24 , 25 ]. Besides, square planar configuration of Pt(II) complexes assists in avoiding detrimental aggregation caused quenching (ACQ), which is one of the most prominent causes of emission loss in transition metal complexes [ 26 ]. In the subsections below, we discuss the effects of different cyclometalating and ancillary ligands on the optical properties of Pt(II) complexes.…”

Section: Structure–property Relationshipsmentioning

confidence: 99%

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Functional Materials Based on Cyclometalated Platinum(II) β-Diketonate Complexes: A Review of Structure–Property Relationships and Applications

et al. 2021

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Square planar organoplatinum(II) complexes have garnered immense interest in the area of materials research. The combination of the Pt(II) fragment with mono-, bi- tri- and tetradentate organic ligands gives rise to a large variety of complexes with intriguing properties, especially cyclometalated Pt(II) complexes in which ligands are connected through covalent bonds demonstrate higher stability, excellent photoluminescence properties, and diverse applications. The properties and applications of the Pt(II)-based materials can be smartly fine-tuned via a judicious selection of the cyclometalating as well as ancillary ligands. In this review, attempts have been made to provide a brief review of the recent developments of neutral Pt(II) organometallic complexes bearing bidentate cyclometalating ligands and β-diketonate ancillary ligands, i.e., (C^N)Pt(O^O) and (C^C)Pt(O^O) derivatives. Both small (monomeric, dimeric) and large (polymeric) materials have been considered. We critically assessed the role of functionalities (ligands) on photophysical properties and their impact on applications.

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Section: Structure–property Relationshipsmentioning

confidence: 94%

Section: Structure–property Relationshipsmentioning

confidence: 99%

Functional Materials Based on Cyclometalated Platinum(II) β-Diketonate Complexes: A Review of Structure–Property Relationships and Applications

et al. 2021

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“…POrganometallic latinum and other heavier metal complexes of polydentate aromatic nitrogen and orthometallated ligands have attracted considerable attention because of their severalowing to potential photooptical and therapeutic applications in chemistry and industry [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Although there are many reports on photophysical properties of C^N (= bpy, ppy or bhq) transition metal complexes, [22,26,[37][38][39] [22,26,[37][38][39], the photophysical properties of the platinum(II) complexes of pbz-have not been widely explored [40][41][42][43][44]. Haga demonstrated [45] that [Ru(bpy) 2 (pbz)] 2+ shows 3 MLCT luminescence comparable to that of [Ru(bpy) 3 ] 2+ , although slightly red-shifted and with a slightly reduced lifetime. Hpbz derivatives have been also used as 'bipyridine analogues' in a variety of complexes with metal ions such as Cu(I), [46] [46], Cu(II), [47]) [47], Zn(II) , [47], Ru(II), [48]) [48], Os(II), [49]) [49] and Re(I) [50,51].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, structural characterization, and luminescence properties of mono- and di-nuclear platinum(II) complexes containing 2-(2-pyridyl)-benzimidazole

Niknam

Hamidizadeh

Nabavizadeh

et al. 2019

Inorganica Chimica Acta

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The starting complex [Pt(Me)(DMSO)(pbz)], (1, (pbz = 2-(2pyridyl)benzimidazolate) was prepared by a known method using the 1 reaction of [Pt(Me) 2 (DMSO) 2 ], A, with Hpbz at room temperature. Reaction of 1 with an equivalent of a phosphine ligand gave the neutral mononuclear complexes [Pt(Me)(L)(pbz)], )] ( 2, (L = PPh 3 ) or and 3, (L =PPh 2 Me). Reaction of 1 with 0.5 equivalent of the linear diphosphine 1,1'-bis(diphenylphosphino)acetylene (dppac) gave the binuclear complex [Pt 2 (Me) 2 (μ-dppac)(pbz) 2 ], 4. All Each the complexes were was fully characterized by NMR spectroscopy, X-ray crystallography and mass spectrometry. The photophysical properties of the complexes were investigated in under different conditions and interpretation was, supported by TD-DFT calculations. The low-lying transitions in the absorption and emission spectra were assigned as having LLCT/MLCT (ligand to ligand charge transfer/metal-to-ligand charge transfer) character. We also describe the luminescence properties of [Pt(Me)(PPh 3 ) (ppy)], 7, and [Pt(Me)(PPh 2 Me)(ppy)], 8, (ppy is 2-phenylpyridinate), the (N^C  ) analogues of 2 and 3.

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“…Cyclometalated complexes have attracted attention because of their several applications in science. − Of particular interest are cycloplatinated complexes bearing strong field ligands such as benzo[ h ]quinolinate (bhq) and 2-phenylpyridinate (ppy) ( VIII , Chart ). − The cycloplatinated(II) compounds with the [Pt(C ∧ N)R] moiety (C ∧ N= cyclometalated ligand and R= alkyl, aryl or halide) are very attractive due to their ease of preparation through C–H activation of ligands like 2-phenylpyridine (Hppy) and benzo[ h ]quinoline (Hbhq) ( VIII , Chart ) with a suitable Pt(II) precursor complex. − Earlier, we have studied the reaction of the double rollover cycloplatinated(II) complex [Pt 2 (μ-bpy-2 H )(Me) 2 (κ 1 -dppm) 2 ], bpy= 2,2′-bipyridine (in which each metallic center bears a monodentate dppm ligand) with the known monomeric cycloplatinated (II) complex [Pt(Me)(bhq)(SMe 2 )] in a 1:2 molar ratio.…”

Section: Introductionmentioning

confidence: 99%

Chelating and Bridging Roles of 2-(2-Pyridyl)benzimidazole and Bis(diphenylphosphino)acetylene in Stabilizing a Cyclic Tetranuclear Platinum(II) Complex

et al. 2019

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The reaction of complex [Pt(Me)(DMSO)(pbz)], 1, (pbz = 2-(2-pyridyl)benzimidazolate) with [PtMe(Cl)(DMSO)2], B, followed by addition of bis(diphenylphosphino)acetylene (dppac), gave the novel tetranuclear platinum complex [Pt4Me4(µ-dppac)2(pbz)2Cl2], 2, bearing both the pbz and dppac ligands. In this structure, the pbz ligands act as both chelating and bridging to stabilize the tetraplatinum framework. The tetranuclear Pt(II) complex was fully characterized by NMR spectroscopy, X-ray crystallography and mass spectrometry and its electronic structure was investigated and supported by DFT calculations.

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Neutral heteroleptic cyclometallated Platinum(II) complexes featuring 2-phenylbenzimidazole ligand as bright emitters in solid state and in solution

Cited by 13 publications

References 102 publications

Functional Materials Based on Cyclometalated Platinum(II) β-Diketonate Complexes: A Review of Structure–Property Relationships and Applications

Functional Materials Based on Cyclometalated Platinum(II) β-Diketonate Complexes: A Review of Structure–Property Relationships and Applications

Synthesis, structural characterization, and luminescence properties of mono- and di-nuclear platinum(II) complexes containing 2-(2-pyridyl)-benzimidazole

Chelating and Bridging Roles of 2-(2-Pyridyl)benzimidazole and Bis(diphenylphosphino)acetylene in Stabilizing a Cyclic Tetranuclear Platinum(II) Complex

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